I'm making my own list of the spammers, of which i publish updates on from time to time. Perhaps one day i'll write an apk to finally solve it once and for all. Unfortunately it looks like Verizon is on to me, and have now begun sending me their own spam telling me to upgrade from my flip-phone. Also, they only let me block like 3 numbers now, and their website has become really crummy. also, i recently found out while on a trip that they do not guarantee the functionality of their personal hot-spot feature for all locations - what?! ¯\_(ツ)_/¯